Suppress

stop check contain curb repress hold back hold in withhold suppress crush subdue overcome quell silence muffle stifle censor conceal cover up interrupt extinguish overpower put down stamp out squash crack down on beat down hold down put an end to conquer throttle muzzle quench snuff out clamp abolish annihilate trample overthrow shush spike sit on smother bring to naught put kibosh on put lid on burke